Jim,
The greyed options show drivers which are not in use, sorry I misled you yesterday.
This is finger trouble I think.
On my machine I have just built a networking library, here are the steps I followed
[SOPC Builder]$ nios2configtool --ptf=/cygdrive/d/altera/kits/nios2/examples/ve
rilog/niosII_cyclone_1c20/full_featured/full_1c20.ptf --cpu=cpu
From within config tool select Build Templates then Packages Net
File Save As Jim.ecc
Build Library
Admittedly I'm running a pre-release of our next version of the kit and not 1.1, but if this doesn't work for you I'll go back and re-install that.
Sadly I will be travelling next week, so response time may be a little slow.